TB9051FTG
Ver.1.1 2019-03-14
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<In the case of OCC pin; “H” 2 (Example: Low-side)>
Figure 7.8-1 (2) Timing chart 2 (OCC = High) of current limitation detection operation at the time
of short to power supply, short to GND, and load short
Note: Some of timing charts in this document may be omitted or simplified for explanatory purposes.
7.8.2. In the case of OCC; L
•
When the motor drive output is short to power supply or short to GND, tBLANK2 = 1
μ
s (Tovc) is
set to the threshold of over-current (Iovc), and the prevention time of the malfunction is set by
noise. Then if a current flows longer than the setting time, the output is in the OFF state.
•
For returning from OFF state, each function restarts according to input instructions from MCU.
Each function re-starts with one pulse signal of EN falling or one pulse signal of ENB rising.
•
When tBLANK2 operates, tBLANK1 is canceled.
<In the case of OCC pin; “L” (Example: Low-side)>
Figure 7.8-2 Timing chart 2 (OCC = Low) of current limitation detection operation at the time of
short to power supply, short to GND, and load short
Note: Some of timing charts in this document may be omitted or simplified for explanatory purposes.